Ideal surface for its age. Note clarity is only 20-50% making issue identification a challenge, but what was seen was ideal plaster.

Waterline tile The waterline tile is all original, likely 30 years or older. It is all in relatively good condition for its age, but it is likely nearing updating status in the next 10 years or less, as signs of age and heavy calcium buildup are seen on all the raised tile. To remove the amount of calcium that is present, the expected cost is around $700 or slightly more.
Cost summary: calcium removal around $700 or slightly more. Total around $700 or slightly more.
Coping brick The coping brick around the east side of the pool is in really good shape. It is just on the west side of the pool that some deterioration is starting to be seen between the brick itself, and a little bit on the north side. Not immediately, but in the next five years or more, some of these bricks are expected to need to be remortared. At that same time, the same person could also add waterproofing to the waterfall rock work. All of that work is less than $1000 to $2000.
Cost summary: remortar coping brick and waterproof waterfall rock work less than $1000 to $2000. Total $1000 to $2000.

The alkalinity is very high. The pH is slightly high. The calcium hardness is also high and the Cyanuric Acid seems to be slightly low. Additionally, the water clarity is somewhat cloudy approximately 20 to 50%.

Recommend adjustments / attn ($100+)

Skimmers There are two skimmers installed. It appears that they are Hayward. Both skimmers have their baskets. The north skimmer is missing its float and is missing its weir door. The south skimmer has its weir door, but both weir doors are still due to be updated due to age and condition. Both skimmers are due to have a new lid. The float on the south skimmer is due to be updated, as well as the float O-ring. All updated would likely cost less than $600. Note both skimmers are original = 36 years old.

Cost summary: skimmer lids, weir doors, floats, and float O-ring, all updated, less than $600. Total less than $600.

Main drain The main drain in the pool was updated likely at the last plaster stage with a channel style drain. With the water clarity so low, it is difficult to determine if it is compliant, but it appears to be a VGBA compliant cover. There is also one equalizer cover on the north side of the pool that is a compliant cover, but this port itself is not compliant.

Polaris 360 There is a Polaris 360 bottom cleaner. It is likely less than two years old and in relatively good condition. It seems to be doing a wheelie nonstop, likely because it is set at too high of a flow. Additionally, the bag is due to be updated, as there is a hole present, and the tail and a rear float may be bad. All of this could be adjusted and corrected for less than $105.
Cost summary: bag, tail, and rear float adjustment and correction less than $105. Total less than $105.

Pool lights There are two pool lights installed. It looks as if the northwest light is slightly newer. Either way, both lights do appear to have condensation present inside the light lens, approximately 20 to 30 percent condensation, the south light being more condensed with likely 40 to 50 percent condensation. Either way, both lights should be updated for safety, at a cost of between $300 for a low-cost Amazon light all the way up to $1200 for a high-quality Pentair 5G LED 12V pool light each. There are two, and labor to install them is around $400 each, so two.
Cost summary: two lights at $300 to $1200 each is $600 to $2400, labor at $400 each is $800. Total $1400 to $3200.

Filter The filter is a Clean and Clear Plus CCP 420 by Pentair. The pressure gauge is bad, at around $50 to update with a new liquid filled gauge. It appears that the top itself may be leaking from a weakened area at the top, potentially costing around $400 for a new top portion of this filter. It also does appear to be leaking from its pressure gauge assembly, tank O-ring, and maybe more. It is also likely that the filter elements are due for service and or updating and replacement. Servicing is $150, and updating and replacing would be around $400 to $500 depending on the quality of the elements. Alternatively, a new AquaStar PLF 35,000 cartridge filter is around $900 and may be a better buy due to the overall condition of this filter.
Cost summary: liquid filled pressure gauge around $50, filter top portion around $400, element service $150, element replacement around $400 to $500. Repair path total around $1000 to $1100. New AquaStar PLF 35,000 alternative around $900 + labor to install $800+.

Recommend pump lid o ring update ($50 or less). Otherwise working. Note that this pump does sound like it is partially struggling slightly, indicating that it may be on the last 50% of its lifecycle. This pump is around 11 years old. It may need to have its rear fan cleaned no other signs of issue just heavy sun damage and it is possible that the motor itself has been updated in the past five years.

Board and timer The board and timer is mounted on two EMT poles and three conduits. It appears that the EMT poles have become detached from the concrete. Attention to this is recommended for safety, to prevent electrical injury. The approximate cost to resecure this is less than $400, including parts and labor. It also does not appear that this electrical pad is GFCI protected. Adding a subpanel is recommended at around $300, a specialty variable speed breaker at around $120, and a GFCI plug outlet breaker at $50. An electrician might charge around $300 in labor. Otherwise it appears that this timer is in working condition, with an old conduit hole that needs to be plugged for $10.
Cost summary: resecure EMT poles less than $400, subpanel around $300, variable speed breaker around $120, GFCI plug outlet breaker $50, electrician labor around $300, conduit hole plug $10. Total less than $1180.

Valving There is one older valve present and one newer valve. The plumbing has some sun exposure. Overall it is due to be updated slightly, and one check valve suction side of pump at around $300 installed. Updating some of the plumbing and adding a return check valve for water fall if needed is less than $600. Repainting and relabeling is less than $200, and covering from the sun using UV mesh is less than $100.

Total less than $1200.